MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Sickle cell trait
The condition in which a person has one copy of the gene for sickle cell (and is called a sickle heterozygote) but does not have sickle cell disease (which requires two copies of the sickle cell gene). If two people with sickle cell trait…
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Show more- Preoperative care Care given before surgery when physical and psychological preparations are made for the operation, according…
- Automatic behavior A behavior that is performed without conscious knowledge and that does not appear to be under conscious…
- Beta particle An electron ejected from the nucleus of a decaying atom. Although beta particles can be stopped by a thin…
- Error of the second kind See: Error, beta
- Dysphonia, spastic See: Spasmodic dysphonia
- Phobia, social Excessive fear of embarrassment in social situations that is extremely intrusive and can have debilitating…
- Nerve, recurrent laryngeal One of the best known branches of the vagus nerve, a very long nerve that originates in the brainstem. After…
- Rib, floating One of the last two ribs. A rib is said to be 'floating' if it does not attach to the sternum (the breast…
- Somnolence Sleepiness, the state of feeling drowsy, ready to fall asleep. A person experiencing somnolence is somnolent…
- Glucose-6-phosphate dehydrogenase (G6PD) Deficiency of G6PD is the commonest disease-causing enzyme defect in humans affecting an estimated 400…
- Shin splint An inflammatory condition of the front part of the tibia (the big bone in the lower leg) that results from…
- Radiation sickness See: Acute radiation syndrome